Starting device for engines.



J. 0. ROBERTS & J. W. NUNN.

STARTING DEVICE FOR ENGINES. APPLIOATIUN FILED AUG. 21, 1911.

Patented Sept. 3, 1912.

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am/human in Q vented certain new anduseful Improvements tween the sleeve and end of the starting cross bar is a stationary clutch 11, which is isconnected to the shaft 1 and is capable of JAMES 0. ROBERTS AND" JOHN W. NUNN; OF GRANGER, TEXAS.

STARTING DEVICE FOR ENGINES.

' Application filed August 21,

To all whom it may concern Be it known that we, JAMES O. ROBERTS and JOHN WV- NUNN, citizens of the United States, residing at Granger, in the county of lVilliamson and State of Texas, have inin Starting Devices for Engines, of which the following is a specification.

Our invention relates to an improvement in starting devices for automobiles, which. is preferably permanently attached to the car and is provided with a shaft which may be connected to theengine of theautoinobile to start the same.

The .main object is to provide suitable means wherebythe starting shaft will be released in .case of back fire of the engine.

In the accompanying drawings: Figure 1 is a view in side elevation of the invention, partly in section; and Fig. 2 is a similar view showing the parts in their released position.

A, represents the frame, inwhich a starting shaft 1 is journaled. The engine shaft 2 is provided with a clutch 3, which is engaged by the clutch 5 of the starting shaft. The starting shaft is provided with a sleeve 6, which carries the clutch 5, and one end of the sleeve is provided with teeth 7 which are adapted to interlock with the teeth 8 on the shaft 1. The sleeve is slidably mounted upon the shaft. A spring 9 is located beshaft 1, so that in starting the engine, the cranking shaft is pressed inward to cause the teeth on the sleeve to engage the teeth of the starting shaft, forming a joint so that when the clutch 5 is brought into engagement with the clutch on the engine shaft, the engine shaft can be rotated for starting the engine. A cross bar 10 is connected to the frame, and mounted upon the adapted to be engaged by a collar 12 having a tooth 13 on one face which meshes or engages with the stationary clutch 11 of the cross bar. The other face of the collar isprovided with ratchet teeth 14. A clutch 16 a slight reciprocating or sliding movement thereon. A spring 17 tends vto hold or force the clutch toward the collar 12. The clutch is provided with ratchet teeth 18, which are adapted to engage the ratchet teeth of the collar 1:2.

In cranking the engine, the starting shaft I Specification of Letters Patent.

Patented Sept. 3, 1912. 1911. Serial No. 645,140.

is pushed in and turned to the right by means of the handle 20. This overcomes the tension of spring 9 and thetoothed face of the sleeve 6 is brought into engagement with the teeth of the shaft '1,'sothat the sleeve is'rotated with the shaft and the teeth 18 of clutch 16 ride over teeth 14 on collar 12.

The clutch gine shaft, causing the engine shaft" to be rotated. Should the engine start in the wrongdirectionorback-fire, the clutch on the engine shaft would carry the clutch of the. starting/shaft with it. "The teeth of the clutch 16 would engage the ratchet teeth of the collar 12, causing the'collar to be ro- 5 engages the clutch of theen tated, and as the tooth 13 of the collar 12 engages the stationary clutch11,-would cause the starting shaft to be disengaged from'the sleeve 6, due to the teeth of thecollar 12 riding up on the inclined teeth offthe clutch 11 and drawing the starting-shaft away from the sleeve. The clutch 16 will "be caused to move on the shaft 1 as the col- 1211512 is forced away from the clutch 11. When the engine shaft starts its forward rotation it is of course understood clutches 3 and 5 disengage in the usual manner.

Having. fully described our invention, what we claim as new and desire to secure *by Letters Patent, is

1. In a starting device for engines, the combination with a clutch member on the engine shaft, of a rotatable, endwise movable starting shaft, a sleeve slidably mounted upon the shaft, means whereby the shaft and sleeve are connected together, a spring inter posed between the shaft and sleeve for holding the sleeve normally'out of rotatable engagement with the shaft, a clutch carried by the sleeve adapted to engage the clutch on the engine'shaft, a pair of shaft separating members mounted on said starting shaft and provided with cooperating cam surfaces whereby they are separated by relative turning movement between them, one of said shaft separating members being carried by said shaft, "and ,the other being loosely mounted on the shaft, and means for preventing the rotation ofsaid last-named member in one direction, Ja A 2. Ina starting mechanism for engines. the combinationwith a frame and a .clutch member of an engine shaft, of a rotatable,

endwise movable starting shaft mounted on the frame, a sleeve slidably mounted on the starting shaft, means for locking the sleeve being rotatably mounted on said starting shaft, and a clutch adapted toengage said 1ast-named 11101113061 for preventing its rovI tation in one direction.

in testixnonywhereof we aflix our signatures, in the presence of two witnesses.

J. 0, ROBERT JOHN W. NUNN.

\Vitnesses R. H. BROOKSHIRE, A.-A. TANZNEHILL.

(Homes at this patent; may be obtained or five cents each, by addressing the "Commissioner of Patents,

- Washington, I). G. 

